I'm actually typing this on a Das Keyboard 4 Ultimate (no C) which I specifically bought to learn typing without looking on the keys, because I don't have the d

I'm actually typing this on a Das Keyboard 4 Ultimate (no C) which I specifically bought to learn typing without looking on the keys, because I don't have the discipline to use apps like the OP. Also, thank you for your link. When I need another keyboard, I'll consider the compact version. The tenkeys are really just a dead weight (literally, given how heavy Das Keyboard is :D) for me. Good that it has media keys too, I could never live without them (especially volume obviously; sadly GNOME has a bug that makes play/next/prev useless after a few suspend-wake cycles).